Hackers from China have infiltrated the computer systems of the Wall Street Journal in the second such attack on a major US news outlet.
The Journal says the hackers were trying to monitor its China coverage.
The New York Times reported earlier that Chinese hackers had persistently penetrated its systems for the last four months.
Beijing has been accused by several governments and companies of carrying out cyber espionage for many years.
China's foreign ministry dismissed the New York Times' accusations as "groundless" and "totally irresponsible".
The Wall Street Journal's publisher, Dow Jones & Company, released a statement Thursday saying hacking attacks related to its China coverage were "an ongoing issue".
A spokeswoman said the paper has completed a network overhaul to bolster security.
Meanwhile, the New York Times said the attacks on its systems coincided with its investigative report into claims that the family of Chinese Premier Wen Jiabao had amassed a multi-billion dollar fortune.
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